Missing icons in documentation template generated by phpDocumentor

Question

Icons are missing in my generated documentation. They show up as character codes. See the image:

This is a Symfony 4 application. I used a downloaded PHAR file from phpdocumentor, placed it in my_project_dir/vendor/phpdocumentor/ and ran this from there:

$ php phpDocumentor.phar -d ../../src/ -t ../../docs/

Then I opened the generated index.html file at my_project_dir/docs/. And that's how it looks.

I've checked the path to the assets. It points to the css/ directory. It's all there.

Answer 1

I feel stupid. It was simple: simply serve the docs through the web server, not just open the index file. So I created a new virtual host and served it at docs.devdungeon.org. Very nice. Icons are now showing up.